Apparatus for continuously manufacturing boards

Plastic article or earthenware shaping or treating: apparatus – Diverse distinct type shaping means

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Details

4251742, 425405R, 425404, 425446, 425328, 100154, 308DIG1, B29C 1500, B29J 500

Patent

active

040252728

ABSTRACT:
A mat formed of a mixture of board particles and a bonding agent is conveyed to oppositely rotating rollers which compress said mat to a desired thickness as the mat passes therethrough. A conveyor associated with the rollers is provided for carrying the compressed mat between a pair of platens mounted in a fixed relationship with respect to the continuously moving mat. As it passes between the platens, the mat is supported by a fluid bearing and is exposed to heat to cure the bonding agent. The platens are internally divided into separate subcompartments. The pressure in these subcompartments is regulated such that the mat is subjected to controlled pressures as it moves past the platens.

REFERENCES:
patent: 2779969 (1957-02-01), Bose
patent: 3230287 (1966-01-01), Caron et al.
patent: 3340795 (1967-09-01), Hartley
patent: 3620158 (1971-11-01), Torelli et al.
patent: 3705248 (1972-12-01), Hill et al.
patent: 3795470 (1974-03-01), De Mets

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